It was initially thought that the new Legend of Zelda: Breath of the Wild will be released alongside the new Nintendo Switch but it was later speculated that we might have to wait a few more months after the Switch is release.
Soon after that, Target leaked that the Wii U version of the game will be release on the 13th of June and now, it looks like we have actual dates of when the game will be release.
According to Laura Kate Dale, Nintendo will be released the new Legend of Zelda: Breath of the Wild in Europe on the 16th of June for the Nintendo Switch. Wii U players will have to wait a few more days are the Wii U version will only be arriving on the 23rd of June.
The dates do not match what Target has leaked but it is close. Laura Kata Dale is also known for leaking accurate Nintendo details so fans are more inclined to believe her but of course, take it with a grain of salt until we hear from Nintendo.